2021171532 has 24 divisors (see below), whose sum is σ = 4738423872. Its totient is φ = 670530000.

The previous prime is 2021171507. The next prime is 2021171533. The reversal of 2021171532 is 2351711202.

It is not an unprimeable number, because it can be changed into a prime (2021171533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396594 + ... + 401657.

It is an arithmetic number, because the mean of its divisors is an integer number (197434328).

Almost surely, 2^2021171532 is an apocalyptic number.

It is an amenable number.

2021171532 is an abundant number, since it is smaller than the sum of its proper divisors (2717252340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021171532 is a wasteful number, since it uses less digits than its factorization.

2021171532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798469 (or 798467 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 2021171532 is about 44957.4413417846. The cubic root of 2021171532 is about 1264.3511974436.

Adding to 2021171532 its reverse (2351711202), we get a palindrome (4372882734).

The spelling of 2021171532 in words is "two billion, twenty-one million, one hundred seventy-one thousand, five hundred thirty-two".